博兴县浅层地下水水化学演化分析研究

摘要

Through comparision and analysis on chemical monitoring data of shallow groundwater in more than 20 years in Boxing county, chemical types and dynamic evolution characteristics of main chemical composition of shal⁃low groundwate have been summarized. It is showed that shallow groundwater hydrochemical types are relatively sta⁃ble in most areas. Among seven long term monitoring wells, cation or anion concentration changed obviously in two monitoring stations only, while there is a rising trend of water chemical composition content at four monitoring wells. These changes mainly caused by the formation of funnels in southern areas. These funnels have caused the recharge of salt water from northern part to southern part in study area.%通过对比分析博兴县20多年来的浅层地下水水质监测资料，研究总结了该区浅层地下水水化学类型及主要水化学组分的动态演化特征。结果表明，该区大部分地段浅层地下水水化学类型较为稳定，7个长期监测点中仅有2个监测点阳离子或阴离子类型呈现出明显改变，有4个监测点部分水化学组分含量呈现出上升趋势，造成这些变化的原因主要与南部地下水降落漏斗的形成导致北部咸水向南部补给有关。